Did you get vaccinated for your Sri Lankan holiday ?
Absolutely! Consult your GP or travel nurse. Basic set is Hep-A, Typhoid (if stay longer than 2 weeks, Tetanus, Polio.
But do mind that Dengue mozzie bites are as big a risk as these diseases and don't have a vaccin yet, hence be careful with skin protection etc.
<Erik> & [Sandya]
Of course, I have all the vaccinations the doctor advises you to have
Why wouldn't you not have them ?